Python GUI Programming Cookbook, Second Edition - Second Edition

How to do it...

By adding args=[8] to the thread constructor and modifying the targeted method to expect arguments, we can pass arguments to the threaded methods. The parameter to args has to be a sequence, so we will wrap our number in a Python list:

    def method_in_a_thread(self, num_of_loops=10):        print('Hi, how are you?')        for idx in range(num_of_loops):            sleep(5)            self.scrol.insert(tk.INSERT, str(idx) + 'n')

In the following code, run_thread is a local variable, which we only access within the scope of the method inside which we created run_thread:

    # Running methods in Threads     def create_thread(self):        run_thread = Thread(target=self.method_in_a_thread, args=[8])         run_thread.start()

By turning the local variable into a member, we can then ...